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Stock Based Incentive Compensation (Tables) | 12 Months Ended
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Sep. 30, 2021
Employee Stock Purchase Plan |
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs | The following table summarizes stock-based compensation expense in the Company’s consolidated statements of operations:
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Years Ended
​ | ​ | September 30, | ​ | September 30,
​ |  | 2021 |  | 2020
​ | ​ | (Amounts in thousands)
Cost of sales | ​ | $ | 5 | ​ | $ | 8
Engineering and development | ​ |  | 38 | ​ |  | 83
Selling, general and administrative | ​ |  | 938 | ​ |  | 891
Total | ​ | $ | 981 | ​ | $ | 982
Share-based Compensation, Stock Options, Activity | The following tables provide summary data of stock option award activity:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Weighted | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted | ​ | Average | ​ | Aggregate
​ | ​ | ​ | ​ | average | ​ | Remaining | ​ | Intrinsic
​ | ​ | Number | ​ | exercise | ​ | Contractual | ​ | Value
​ |  | of Options |  | price |  | Term |  | (in thousands)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Outstanding at September 30, 2019 |  | 2,000 | ​ | $ | 3.75 |  | — |  | ​ | —
Granted |  | — | ​ |  | — |  | — |  | ​ | —
Expired |  | (500) | ​ | $ | 3.85 |  | — |  | ​ | —
Forfeited |  | — | ​ |  | — |  | — |  | ​ | —
Exercised |  | (500) | ​ |  | 3.85 |  | — |  | ​ | —
Outstanding at September 30, 2020 |  | 1,000 | ​ | $ | 3.64 |  | — |  | ​ | —
Granted |  | — | ​ |  | — |  | — |  | ​ | —
Expired |  | (500) | ​ | ​ | 3.85 |  | — |  | ​ | —
Forfeited |  | — | ​ |  | — |  | — |  | ​ | —
Exercised |  | — | ​ |  | — |  | — | ​ | ​ | —
Outstanding at September 30, 2021 |  | 500 | ​ | ​ | — |  | .29 Years | ​ | $ | 4
Exercisable at September 30, 2021 |  | 500 | ​ | $ | 3.43 |  | .29 Years | ​ | $ | 4
Vested and expected to vest at September 30, 2021 |  | 500 | ​ | $ | 3.43 |  | .29 Years | ​ | $ | 4
Schedule of Nonvested Share Activity | The following table provides summary data of nonvested stock award activity: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted | ​ | Weighted | ​ | ​ | ​
​ | ​ | ​ | ​ | Average | ​ | Average | ​ | Aggregate
​ | ​ | Number of | ​ | grant date | ​ | Remaining | ​ | Intrinsic
​ | ​ | nonvested | ​ | Fair | ​ | Contractual | ​ | Value
​ |  | shares |  | Value |  | Term |  | (in thousands)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Nonvested shares outstanding at September 30, 2019 |  | 190,735 | ​ | $ | 10.12 |  | 2.21 Years | ​ | $ | 2,560
Activity in fiscal year 2020: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Granted |  | 96,750 | ​ | $ | 13.28 |  | — | ​ |  | —
Vested |  | (84,743) | ​ | $ | 9.66 |  | — | ​ |  | —
Forfeited |  | — | ​ | $ | — |  | — | ​ |  | —
Nonvested shares outstanding at September 30, 2020 |  | 202,742 | ​ | $ | 11.82 |  | 2.21 Years | ​ | $ | 1,750
Activity in fiscal year 2021: |  |  | ​ |  |  |  |  | ​ |  |
Granted |  | 103,465 | ​ | $ | 8.60 |  | — | ​ |  | —
Vested |  | (90,395) | ​ | $ | 11.79 |  | — | ​ |  | —
Forfeited |  | (18,750) | ​ | $ | 10.37 |  | — | ​ |  | —
Nonvested shares outstanding at September 30, 2021 |  | 197,063 | ​ | $ | 10.28 |  | 2.15 Years | ​ | $ | 1,760

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